Question

QUESTION 6
1.   Why are strings usually primitive (or near-primitive) in modern programming languages?
       readability
       readability and writeability
       efficiency
       readability, writeability, and efficiency
QUESTION 7
1.   There are two main problems with pointers:
       dangling pointers & memory leaks
       marked sweep and memory leaks
       dangling pointers & tombstones
       reference counters and marked sweep

QUESTION 8
1.   Which of the following implementations of arrays can grow?
       static
       heap-dynamic
       fixed heap-dynamic
       fixed stack-dynamic
QUESTION 9
1.   Why are arrays with homogenous elements so efficient?
       direct access
       indirect access
       can use linked lists to implement
       uses a table to implement the index lookup
QUESTION 10
1.   Which of the following is NOT a string length option?
       fixed length
       dynamic length (based on type)
       dynamic length (based on implementation)
       dynamic length (no size limit)

Answer 1

Answer 6

readability, writeability, and efficiency

String improves readalility and writability eg, 300 is integer and "300" is the string value

As we know that operstions on primitives are supported by computer hardware thus increases efficiency

Answer 7

       dangling pointers & memory leaks
Dangling pointer is the pointer that points to object that doesn't exist in memory location

Memory leak occur when allocated memory is not deallocated

Answer 8

heap-dynamic

in this type of array the size can grow dynamically as and when required

Answer 9

direct access

Homogeneous arrays can easily delete or retreive any element based on the index

Answer 10

       dynamic length (based on type)
based on implementation means the dynamic length set by variable definition

dynamic length (no size limit) means it can grow and shrink dynamically